Heavy-Duty Back-flow Preventer, 3/4" FHT x 3/4" MHT

Made of high strength glass reinforced Zytel® construction. An economical alternative to the high cost of brass. Corrosion and chemical resistant. Integral lock screw to meet all code requirements.

Operating pressure range: 0-125 PSI.

By: Messoid, 08/22/12

Work great, but I had to tighten it a lot more than I thought I should have to in order to get a leak free connection.

By: jscruggszoo, 08/22/11

This is exactly what you need to prevent your drip system from possibly contaminating your water supply. Mine is placed just before the filter. This material is plenty sturdy; I have installed and uninstalled it numerous times and it seems to withstand quite a bit.